fix(lint): use plain comments for architecture validator codes

Replace # noqa: SVC-006 with # SVC-006 to avoid ruff warnings about
unknown codes. Updated architecture validators to match the new format
by checking for the code string directly instead of the noqa: prefix.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/core/services/auth_service.py

@@ -61,7 +61,7 @@ class AuthService:
 
         # Update last_login timestamp
         user.last_login = datetime.now(UTC)
-        db.commit()  # noqa: SVC-006 - Login must persist last_login timestamp
+        db.commit()  # SVC-006 - Login must persist last_login timestamp
 
         token_data = self.auth_manager.create_access_token(user)
 
@@ -176,7 +176,7 @@ class AuthService:
 
         # Update last_login timestamp
         user.last_login = datetime.now(UTC)
-        db.commit()  # noqa: SVC-006 - Login must persist last_login timestamp
+        db.commit()  # SVC-006 - Login must persist last_login timestamp
 
         token_data = self.auth_manager.create_access_token(user)
 

app/modules/core/services/platform_settings_service.py

@@ -133,7 +133,7 @@ class PlatformSettingsService:
             )
             db.add(admin_setting)
 
-        db.commit()  # noqa: SVC-006 - Setting change is atomic, commit is intentional
+        db.commit()  # SVC-006 - Setting change is atomic, commit is intentional
         db.refresh(admin_setting)
 
         logger.info(f"Platform setting '{key}' set to '{value}' by user {user_id}")